The portable steel yard ramp allows for traffic to move from the dock level down to the ground or from the ground up into the back of a truck, which helps loading/unloading flow smoothly. The 18" industrial solid rubber pneumatic tires allow for easy movement of the yard ramp around your shipping yard to have you ready in minutes to begin loading/unloading. The hydraulic adjustment system permits fast reliable height adjustment of the yard ramp with virtually any trailer bed height.